A-3

MPX 423 A • Specifications, Part Numbers, Accessories
PRELIMINARY
Nominal level ............................... 1 Vp-p for Y of component video and S-video, and for composite video
0.7 Vp-p for RGB, and R-Y and B-Y of component video
0.3 Vp-p for C of S-video
Minimum/maximum levels
RGB/VGA outputs .......... 0.3 V to 1.5 Vp-p
S-video outputs ................ 0.4 V to 2.0 Vp-p
Composite video outputs 0.4 V to 2.0 Vp-p
Impedance .................................... 75 ohms
Return loss .................................... -40 dB @ 5 MHz
RGB/VGA inputs ............ <-40 dB @ 5 MHz
S-video inputs .................. <-30 dB @ 5 MHz
Composite video inputs . <-30 dB @ 5 MHz
DC offset
RGB/VGA outputs .......... ±5 mV with input at 0 offset
S-video outputs ................ 1.5 V with input at 0 offset
Composite video outputs 1.5 V with input at 0 offset
Switching type (S-video and/or composite video)
.......................................................... Vertical interval
Sync
Input type (RGB/VGA group) .. RGBHV, RGBS, RGsB, RsGsBs
Output type (RGB/VGA group) RGBHV, RGBS, RGsB, RsGsBs (follows input)
Standards ...................................... NTSC 3.58, NTSC 4.43, PAL, SECAM
Input level ..................................... 1.9 V to 5.0 Vp-p
Output level .................................. TTL: 5.0 Vp-p, unterminated
Input impedance .......................... 510 ohms
Output impedance ...................... 75 ohms
Max input voltage ....................... 5.0 Vp-p
Max. propagation delay .............. 30 ns
Max. rise/fall time ....................... 4.2 ns
Polarity .......................................... Positive or negative (follows input)
Audio
Routing .......................................... 12 x 2 stereo matrix switcher
Gain ............................................... Unbalanced output: -6 dB; balanced output 0 dB
Frequency response ..................... 20 Hz to 20 kHz, ±0.05 dB
THD + Noise ................................ 0.03% @ 1 kHz, 0.3% @ 20 kHz at nominal level
S/N ................................................ >90 dB, output 21 dBu, balanced, at maximum output (unweighted)
Crosstalk ....................................... <-90 dB @ 1 kHz, fully loaded
Stereo channel separation .......... >80 dB @ 1 kHz
CMRR ............................................ >75 dB @ 20 Hz to 20 kHz
Volume range ............................... -98 dB to 0 dB (volume numbers 0 to 64 in 1.0 dB steps);
Output 2 default = 64 (0 dB)

N Full attenuation is volume level 0, -98 dB. The default for output 1 is -15 dB, volume level 50.